Composition of matter to be used for the manufacture of salts of acetyl-salicylic acid



Patent ed Mar. 11,1924.

. UNITEDSTATES PATENT F 1,486,373 rice.

OTTO G ERNGROSS AND HERMANN EAST, OF CHARLOTTENBURG, NEAR BERLIN- v GERMANY, ASSIGNOBS, BY MESNE ASSIGNMENTS, TO THE CHEMICAL FOUNDA- TION, INC., A CORPORATION OF DELAWARE.

COMLOSITIONOF MATTER TO BE USED FOR THE MANUFACTURE .OF SALTS OF ACETYL-SALIGYLIC ACID.

Ho Drawing.

Acid; and we do hereby declare the following to be a full, clear,and exactdescription of the invention, such as will enable others skilled in the art to which it appertains to make and'use the same.

Our invention relates to a new composition of matter to be used for the manufacture of salts of acetyl-salicylic acid:

The salts of acetyl-salicylic acid are easily 2o decomposed. For instance an alkali splits ofi the acetyl-group and an acid the metal.

Therefore it was supposed that the preparation of the salts of acetyl-salicylic acid 7 could only be executed in an organic solvent. 2 in order to avoid any decomposition during the manufacturing process.

We have found that these salts ma be manufactured in a watery solution wit out any decom ition and have described and claimed this process and the products in a former application (filed December 4, 1912, Serial No. 7 34,912).

Our composltion of matter to he used for the manufacture of salts of acetyl-salicylic acid; This composition contains acety'l-salicylic acid as essential constituent and an admixture to be described below.

The term: admixture may be generally used to define the substances mixed with the acetyl-salicylic acid employed in our invention. This admixture may consist of one, two or an unlimited number of metal-combinations alone or mixed with suitable ingredients as hereafter specified.

As a combination of a metal we preferably use an oxide, carbonate, bicarbonate, silicate, halogenide (chloride and so on) any salt of an oxygen acid of sulphur, (sulphate,'sulphite and so on) or of nitrogen (nitrate, nitrite) or of phosphorous (phosphate) 'a borate and so on. The terms: combination of a metal or metal-combinapresent invention relates to a new Application filed January 17, 1913. Serial No. 742,695.

tion can .be enerally used to define substances herebe ore mentioned.

One of these metal-combinations, also two or more of them, can be used in one mass and these metal combinations may contain either the same metal or difi'erent metals.

The admixture consisting of a metal-combination or of metal-combinations can be 111 any suitable proportion to the employed acetyl-salicylic acid, for instance the acetylsalicylic acid can be employed in excess or in the required amount for formin salts, but the admixture (the metal-oombmation or metal-combinations) can also preferably be used in excess for instance 5-20 per cent over the required amount necessary for formin salts of acetyl-salicylic acid.

11 order to carry out our invention pracizically, we can for instance proceed as folows: 1

Acetyl-salicylic acid andas admixturea combination of a metal the salt 'of which we intend to manufacture, are thoroughly mixed in solid or especially dried (waterfree) state in any known manner. This mass as obtained can be used without any further treatment or it can be formed in any desired form, for instance: tablets, pastils, suppositories and so on. For this purpose the above described mass ma be mixed with suitable ingredients adapte for rendering stable the pressed masses without damaging or decomposing the same, for instance: talcum, starch, some kinds of sugar, sodium chloride, bicarbonate of sodium, gelatine and so on. This mass is stable in the dry state and forms a salt or salts of acetyl-salic lic acid if it comes in contact'or is mix with water or with a watery liquid (for instance alcohol of any kind and degree, milk, cofiee, tea, soup and so on -Other suitable ingredients which increase the stability of the composition or which are allowable in the mixture without damagin or decomposing the composition, may be, i desired, added. For this purpose we add for instance means for im roving the taste (any kind of sugar, Na 1, NaHOQ and so 011'), means for rendering the pressed mass more durable, such asstarch and any kind of sugar, means for preventin the decomposition of the mass in the mixe and especially dried' state or in any kind of compressed form may be.

and

oscopic substances (for instance Na K,CO CaCl cannot be used.

As metal in the metal-combinations em ployed according to our invention we use an element -of the alkali, alkaline-earth, 'rare earth-groups of Mg, of Zn, of Hg, of Ag and so on. We declare that the invention is not restricted to the combinations of the cited elements and combinations of other elements can also be used.

The new composition of matter may serve,

as a medicament for internal or external use preferably after being dissolved in wateror in a watery liquid such as hereinbefore mentioned. Also the product as a powder directlyput into the mouth, the saliva acting as watery liquid Although the-composition of matter ma 1 be produced by the process herein describe or p herein referred to the premnt invention is not confined to any particular combination capable of reacting with acetyl-- salicylic acid to form a metal acetyl-salicylate when brought into contact with a solvent.

2. A composition of matter comprising dry acetyl-salicylic acid, a dry metal combination capable of reacting with acetyl-salicylic acid to form a metal acetyl-salicylate when brought into contact with a solvent, and a dry moisture absorbing material.

3. A composition of matter comprising dry acetyl-salicylic acid, and a dry metal combination of the alkaline-earth group of reacting with acetylrsalicylic acld to form a metal acetyl-salicy ate when brought into contact with a solvent.

In testimony whereof we afiix our signatures in the presence of two witnesses.

. OTTO,'GERNGROSS.

HERMANN KAST, Witnesses:

Wommmn Ham, HENRY capable 

